1216346107 has 4 divisors (see below), whose sum is σ = 1287895896. Its totient is φ = 1144796320.

The previous prime is 1216346093. The next prime is 1216346111. The reversal of 1216346107 is 7016436121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7016436121 = 97 ⋅72334393.

It is not a de Polignac number, because 1216346107 - 2⁷ = 1216345979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1216346407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35774869 + ... + 35774902.

It is an arithmetic number, because the mean of its divisors is an integer number (321973974).

Almost surely, 2^1216346107 is an apocalyptic number.

1216346107 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1216346107 is a deficient number, since it is larger than the sum of its proper divisors (71549789).

1216346107 is an equidigital number, since it uses as much as digits as its factorization.

1216346107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71549788.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1216346107 is about 34876.1538447117. The cubic root of 1216346107 is about 1067.4619166029.

The spelling of 1216346107 in words is "one billion, two hundred sixteen million, three hundred forty-six thousand, one hundred seven".